Mercedes W163 Rear Right O/S Door Lock Latch Mechanism Actuator A1637302235

Mercedes W163 Rear Right O/S Door Lock Latch Mechanism Actuator is an original component from the Locks and latches group, designed for the rear right side of the vehicle body. It ensures the proper operation of the central locking system, stable latching, and secure door opening, which translates into comfort during daily use of your Mercedes vehicle.

Specifications and technical data

• SKU: A1637302235
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1637302235
• Substitutable numbers: A1637302235, A 163 730 22 35
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Purpose and function of the actuator

The presented actuator is responsible for the mechanical locking and unlocking of the rear right door in the Mercedes W163 body, working in conjunction with the central locking system and both internal and external door handles. Its task is to precisely transfer movement from the control system to the lock mechanism, ensuring that the door remains securely closed while driving while also opening smoothly upon the driver's or passenger's request.

Its placement in the rear – right side of the vehicle area makes this component crucial for the proper functioning of the security for this part of the body, including the door locking function while driving and the operation of the central locking system throughout the entire vehicle.

Construction and integration with the lock system

The actuator is integrated with the door lock mechanism, forming a complete working assembly responsible for the movement of the latch. The design provided by the manufacturer, Mercedes, ensures:

• proper fitment to the geometry of the rear right door,
• compatibility with factory lock rods and levers,
• correct response to signals from the central locking system and cabin controls.

Thanks to this, installation is straightforward, without the need for body modifications or the adaptation of other locking system components.

Benefits of using an original Mercedes component

Using an original actuator in the rear right part of the body allows for maintaining the consistent operation of the entire locking system. Proper fitment to the door and factory mounts reduces the risk of play, leaks, or improper closing. This is particularly important in premium class vehicles, where stable central locking operation and predictable door lock performance are expected.

An element from the Locks and latches group of this type is a good choice when replacing a damaged mechanism, addressing locking issues on one side of the vehicle, or during post-collision repairs involving the rear right part of the body.

Condition, fitment, and service application

The actuator is designed for installation in the rear right zone of the vehicle, in place of the factory lock mechanism. In practice, this means it can be used both for standard replacement of a worn-out part and during more extensive body and mechanical work within the rear door area.

Before installation, it is recommended to verify compatibility with your specific vehicle based on technical data and part numbers in the specification section. This helps avoid fitment issues and ensures proper cooperation with the existing electrical installation and the central locking control system.

Repair expansion and knowledge about used parts

If you are planning a comprehensive repair or upgrade of the door lock zone in your Mercedes and need other components from the same group, such as locking mechanisms, cylinders, or central locking actuators, check out the available parts in the Mercedes Locks and latches category.

If you want to better understand why used original components for premium cars are currently so frequently chosen for repairs, it is worth reading an article describing the current situation on the parts market – you can find it here: Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend.